Power quality refers to the characteristics of electrical power that affect the performance of electrical devices. It includes factors such as voltage stability, frequency consistency, and the presence of disturbances like harmonics or transients. Good power quality ensures that electrical equipment operates efficiently and reliably, minimizing the risk of damage or malfunction. Poor power quality can lead to various issues, including equipment failure, increased energy costs, and reduced lifespan of devices. Monitoring and improving power quality is essential for industries and households alike, as it helps maintain the efficiency of systems and enhances overall energy reliability.